Vulnerability Report

CVE-2026-34243

RCE

Title: Command Injection in wenxian GitHub Actions Workflow

RCE

Proof Of Concept

PoC Available for CVE-2026-34243

CWE Category CWE-77
Published Date Mar 31, 2026
Modified Date Jul 24, 2026
Exploit Status Available
Score 9.8 CVSS v3.1
Exploit Probability (EPSS)
2.78%

Vulnerability Summary

CVE-2026-34243: wenxian is a tool to generate BIBTEX files from given identifiers (DOI, PMID, arXiv ID, or paper title). In versions 0.3.1 and prior, a GitHub Actions workflow uses untrusted user input from issue_comment.body directly inside a shell command, allowing potential command injection and arbitrary code execution on the runner. At time of publication, there are no publicly available patches.

Impacted Vendors

N
njzjz 1

Reference Links

https://github.com/njzjz/wenxian/security/advisories/GHSA-r4fj-r33x-8v88
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-34243 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/pvharmo2/gha-lab-85f022290a
View Code
MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.